Now in early access

Screen recording in.
Demo video out.

Upload any screen recording. Get back a polished video — with AI script, natural voiceover, synced captions, and auto zoom. No editing required.

app.demodone.app/editor
Auto Zoom ON
Click the settings icon to...
1:23 / 2:47
4 hrs+
saved per demo video
90%
cheaper than freelancers
<5 min
from upload to export
10 min
max video length

The problem

Recording is easy.
Everything after is painful.

✍️

Writing a script

2-3 hours

🗓️

Finding a narrator

Days

🔄

Syncing audio

1-2 hours

💬

Adding captions

+1 hour

DemoDone does it all in minutes.

Features

Six features. Zero busywork.

Each one replaces hours of manual work.

📝 AI Script Generation

Vision AI writes your script, scene by scene.

Our AI watches your recording, understands what's happening on screen, and writes contextual narration. Choose from product demo, tutorial, or marketing style.

  • Analyzes every scene with vision AI
  • Three script styles to match your goal
  • Edit inline before generating
Scene Analysis
SCENE 1 · 0:00–0:12

“Open the dashboard and navigate to the settings panel in the top right corner.”

SCENE 2 · 0:12–0:28

“Here you'll find notification preferences. Toggle email alerts to stay updated.”

SCENE 3 · 0:28–0:41

“Finally, click Save to apply your changes. You're all set.”

Voice Selection
S
Sarah
Professional · Warm
▶ Preview
M
Marcus
Friendly · Conversational
Y
Yuki
Clear · Technical
Speed
1.0x
🎙️ Natural AI Voiceover

Voices that sound human, not robotic.

Choose from multiple natural voices. Adjust speed, add custom pronunciation for your product names. The result sounds like a real person recorded it.

  • 50+ natural-sounding voices
  • Custom pronunciation dictionary
  • Adjustable speed (0.75x–1.5x)
💬 Animated Captions

Word-by-word sync, like karaoke.

Auto-generated captions with precise word-level timing. Customize fonts, colors, and position. Export as burned-in or separate SRT file.

  • Word-level highlight animation
  • Customizable style and position
  • SRT export for any platform
Click the settings icon to configure
Font: Inter BoldSize: 32px Indigo
⭐ Key Differentiator

Auto Zoom.
No competitor does this.

AI detects your cursor clicks, input fields, and key actions — then auto zooms to the action area with smooth transitions. Your viewers never miss what matters.

🖱️

Mouse-Aware Zoom

Detects clicks and movement, auto zooms into the action area.

⌨️

Input Focus Zoom

When you type, zooms into the input field automatically.

🎬

Smooth Transitions

Ken Burns style pan & zoom for static screens to keep visual interest.

Timeline Sync
Video
Voice
Zoom
Speed adjusted Auto zoom Original pace
Smart Sync Engine

AI handles pacing. Voice and video stay in perfect sync.

Speeds up dead time, slows down for important actions. Your narration and video are always perfectly aligned — no manual timing adjustments needed.

📦 One-Click Export

Download or share. Your demo is ready.

Export as MP4, WebM, or generate a share link. Your polished demo video is ready in minutes, not days.

Export Options
MP4Best compatibility
~24 MB
WebMSmaller file size
~18 MB
Share LinkInstant sharing

How it works

Three steps. That's it.

01

Upload

Drop your screen recording. MP4, WebM, MOV — up to 10 minutes. No account needed to try.

02

Customize

Pick a voice, choose a style, review and tweak the AI-generated script. Make it yours.

03

Export

Download your polished demo video or grab a share link. Ready to publish anywhere.

Early feedback

What beta testers say

I used to spend 3 hours per demo video. Now it takes 4 minutes. The auto zoom is insane — it knows exactly where to focus.

A
Alex K.
Product Manager

The AI script is surprisingly good. It actually understands what's happening on screen, not just generic narration.

S
Sarah L.
Customer Success Lead

We needed onboarding videos for 30 features. Would have taken weeks. Did it in a day with DemoDone.

J
James T.
DevRel Engineer

FAQ

Common questions

What video formats are supported?
MP4, WebM, and MOV — up to 10 minutes in length. We recommend 1080p or higher for best results.
How long does processing take?
Typically 2-5 minutes depending on video length. A 3-minute recording usually takes about 3 minutes to fully process.
Can I edit the AI-generated script?
Yes! You get full control over the script before generating the voiceover. Edit inline, change wording, add context — make it exactly what you want.
What makes Auto Zoom different?
Auto Zoom uses AI to detect your cursor movements, clicks, and input fields — then automatically zooms into the relevant area with smooth transitions. No manual keyframing. No competitor offers this.
Is early access really free?
Yes. Early access users get full functionality at no cost. We'll introduce pricing tiers after launch, but early users will get a permanent discount.
Can I use my own voice instead of AI?
Not yet, but it's on the roadmap. For now, you can choose from 50+ natural AI voices and customize pronunciation for your product terms.

Ready to try?

Early access is free. No credit card required.

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